:root {
  --bg: #f2f2f7; --card: #ffffff; --text: #111114; --muted: #6b6b76; --line: #e2e2e8;
  --accent: #0a74da; --paid: #1f9d55; --rest: #dfe3ea; --warn: #d97706; --bad: #d62839; --ok-bg: #e6f6ec; --bad-bg: #fdecee; --warn-bg: #fff4e0; --blue-bg: #e6f0fb;
  --tab-h: 62px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000; --card: #1c1c1e; --text: #f2f2f7; --muted: #9a9aa5; --line: #2c2c30;
    --accent: #4aa3ff; --paid: #34c77b; --rest: #3a3a40; --warn: #f5a524; --bad: #ff5d6c; --ok-bg: #12301f; --bad-bg: #3a1a1e; --warn-bg: #3a2c12; --blue-bg: #14263d;
  }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.35 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  padding-bottom: calc(var(--tab-h) + env(safe-area-inset-bottom));
}
body.modal-open { overflow: hidden; }
header#top {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 8px;
  padding: calc(8px + env(safe-area-inset-top)) 16px 8px; background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
}
header h1 { flex: 1; margin: 0; font-size: 22px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.icon-btn { border: 0; background: none; color: var(--accent); font-size: 34px; line-height: 1; padding: 0 8px 4px 0; min-width: 36px; min-height: 44px; }
#top-actions { display: flex; gap: 8px; }
main { padding: 4px 16px 24px; max-width: 640px; margin: 0 auto; }
nav#tabs {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10; display: flex; height: calc(var(--tab-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom); background: color-mix(in srgb, var(--card) 92%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--line);
}
nav#tabs a { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; font-size: 11px; color: var(--muted); text-decoration: none; }
nav#tabs a span { font-size: 22px; line-height: 1; }
nav#tabs a.on { color: var(--accent); }

.card { background: var(--card); border-radius: 14px; padding: 14px; margin: 12px 0; }
.card h3 { margin: 0 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.stat { background: var(--card); border-radius: 14px; padding: 12px 14px; }
.stat .l { font-size: 12px; color: var(--muted); }
.stat .v { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; margin-top: 2px; }
.stat .v.paid { color: var(--paid); } .stat .v.bad { color: var(--bad); }
.donut-wrap { display: flex; flex-direction: column; align-items: center; }
.donut { max-width: 220px; width: 62vw; height: auto; }
.ring-rest { stroke: var(--rest); } .ring-paid { stroke: var(--paid); transition: stroke-dasharray .4s; }
.donut-top { font-size: 30px; font-weight: 700; fill: var(--text); font-variant-numeric: tabular-nums; }
.donut-bottom { font-size: 13px; fill: var(--muted); }
.legend { display: flex; gap: 18px; font-size: 13px; color: var(--muted); margin-top: 6px; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 5px; background: var(--paid); } .dot.rest { background: var(--rest); }

.loan-card { display: flex; gap: 12px; align-items: center; text-decoration: none; color: inherit; }
.loan-card .info { flex: 1; min-width: 0; }
.loan-card .name { font-weight: 600; font-size: 17px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sub { font-size: 13px; color: var(--muted); }
.bar { height: 8px; border-radius: 4px; background: var(--rest); overflow: hidden; margin: 8px 0 6px; }
.bar > i { display: block; height: 100%; background: var(--paid); }
.kv { display: flex; justify-content: space-between; gap: 8px; font-size: 14px; padding: 3px 0; }
.kv b { font-variant-numeric: tabular-nums; }
.chip { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 10px; background: var(--blue-bg); color: var(--accent); white-space: nowrap; }
.chip.pagata, .chip.estinto { background: var(--ok-bg); color: var(--paid); }
.chip.scaduta { background: var(--bad-bg); color: var(--bad); }
.chip.parziale, .chip.rinviata { background: var(--warn-bg); color: var(--warn); }
.chip.annullata, .chip.archiviato { background: var(--rest); color: var(--muted); }

.row { display: flex; align-items: center; gap: 10px; padding: 11px 0; border-top: 1px solid var(--line); min-height: 56px; }
.row:first-child { border-top: 0; }
.row .body { flex: 1; min-width: 0; }
.row .t { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-weight: 600; }
.row .amt { font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.row.cancelled .body { opacity: .55; text-decoration: line-through; }
.row input[type=checkbox] { width: 26px; height: 26px; accent-color: var(--accent); flex: none; }
.row .chk-spacer { width: 26px; flex: none; }

.btn { appearance: none; border: 0; border-radius: 12px; padding: 12px 16px; min-height: 46px; font-size: 16px; font-weight: 600; background: var(--rest); color: var(--text); cursor: pointer; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.paybtn { background: var(--ok-bg); color: var(--paid); padding: 8px 14px; min-height: 40px; flex: none; }
.btn.danger { background: var(--bad); color: #fff; }
.btn.ghost { background: none; color: var(--accent); }
.btn.block { display: block; width: 100%; margin: 8px 0; }
.btn:disabled { opacity: .5; }
.btn-row { display: flex; gap: 10px; margin-top: 14px; } .btn-row .btn { flex: 1; }
.fab { position: fixed; right: 18px; bottom: calc(var(--tab-h) + 18px + env(safe-area-inset-bottom)); width: 56px; height: 56px; border-radius: 28px; font-size: 32px; padding: 0; box-shadow: 0 4px 14px rgba(0,0,0,.25); z-index: 9; }
.selbar { position: fixed; left: 12px; right: 12px; bottom: calc(var(--tab-h) + 10px + env(safe-area-inset-bottom)); z-index: 9; }
.selbar .btn { width: 100%; box-shadow: 0 4px 14px rgba(0,0,0,.25); }

label.f { display: block; margin: 12px 0 0; font-size: 13px; color: var(--muted); }
input, select, textarea { width: 100%; font: inherit; font-size: 17px; padding: 11px 12px; margin-top: 4px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); min-height: 46px; }
textarea { min-height: 84px; }
input[type=radio], input[type=checkbox] { width: auto; min-height: 0; margin: 0 8px 0 0; }
.seg { display: flex; gap: 8px; margin-top: 6px; } .seg label { flex: 1; text-align: center; padding: 10px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--text); font-size: 15px; }
.seg input { display: none; } .seg label:has(input:checked) { background: var(--accent); border-color: var(--accent); color: #fff; }
.months { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: 6px; } .months label { display: flex; align-items: center; padding: 8px 6px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--text); font-size: 14px; margin: 0; }
.errors { background: var(--bad-bg); color: var(--bad); border-radius: 12px; padding: 10px 14px; margin: 12px 0; font-size: 14px; } .errors li { margin: 2px 0; }
.note { background: var(--blue-bg); border-radius: 12px; padding: 10px 14px; margin: 12px 0; font-size: 14px; }
.note.warn { background: var(--warn-bg); }
.preview { max-height: 220px; overflow: auto; font-size: 14px; font-variant-numeric: tabular-nums; }
.empty { text-align: center; color: var(--muted); padding: 40px 10px; }
.hist { font-size: 13px; color: var(--muted); margin: 3px 0; } .hist s { opacity: .7; }

.sheet-bg { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,.45); display: flex; align-items: flex-end; justify-content: center; }
.sheet { width: 100%; max-width: 640px; max-height: 90vh; overflow: auto; background: var(--bg); border-radius: 20px 20px 0 0; padding: 18px 16px calc(18px + env(safe-area-inset-bottom)); }
.sheet h2 { margin: 0 0 8px; font-size: 20px; } .sheet-msg { font-size: 15px; } .sheet .card { margin: 10px 0; }
.opt { display: block; background: var(--card); border-radius: 12px; padding: 12px; margin: 8px 0; border: 2px solid transparent; }
.opt:has(input:checked) { border-color: var(--accent); } .opt b { display: block; } .opt span { font-size: 13px; color: var(--muted); }
.opt input[type=radio] { float: left; margin: 4px 10px 0 0; }